Yamaha T9.9 4 stroke electric start. The motor was working great the day before. When I went to start it the next day, nothing happend when I pushed the start button. Power tilt works, battery is fully charged and capable of starting the big motor 125 hp mercury outboard. 9.9 outboard will not start, won't even turn over. When I push the start button, no sound is heard, no clicking nothing. Emergency kill switch is fully attached. Transmission is in neutral. I've checked and rechecked battery terminals as well as positive and ground connections to the motor (12.7volts at the motor). Any help would be much appreciated.